274 S. Reginald Price. 
II. Germination of the Spores. 
(a). In hanging drops. The results of attempts to germinate 
the spores in various media were closely similar to those obtained 
by Buller (5). The spores germinated readily in beerwort, fairly 
well in a solution containing peptone, grape sugar and potassium 
nitrate, and sparingly in a slightly alkaline extract of Elm wood 
No germination occurred either in distilled water, rain water, or in 
water containing sections of Elm wood. Germination was also 
tried in Ward tubes—where there is a more abundant supply of 
air—but with no marked difference in the result. 
Text-figures 1 to 4. Text-fig. 1 : formation of oidia in hanging drop in 
peptone solution, shewing early stage (X c. 500). Text-fig. 2 : group of oidia 
from wood block, three months old, showing the remains of the hyphae uniting 
the oidia into chains—in some cases the walls have thickened (X c. 500). 
Text-fig. 3 : group of free oidia from wood culture, showing variation in shape 
and size (X c. 500). Text-fig. 4 : spores germinating and penetrating elements 
of living tree : inoculated on new wound, November 20, 1912, cut November 
27, 1912. 
Spores which had been kept in a corked tube from November 
11 to February 5—a period of 79 days—germinated quite well in 
beerwort, although there was a little delay in the first appearance 
